Jamestown is located in Boulder county Colorado with a geographic area of 0.6 square miles. The total population in Jamestown is 250 with 51.6% male and 48.4% female. Children under age 5 represent 0.0% of the population, under age 18 equal 11.2% of the population and over age 65 is 10.4% of the population. The median household income is $110,417, per capita income is $60,795. There are a total of 113 housing units with 73.5% owner occupied. Education includes 19.5% of residents that are high school graduates and 60.2% with a bachelor's degree or higher. The average temperature in Jamestown in the summer is 68 degrees, and in the winter 29 degrees.